UWATEC Digital Depth Gauge - Random Log

just picked up my digital gauge from my LDS and took it for a dive. Worked fine, big clear display. Once I had finished my dive i was looking throught the Logs and:

Log 1:
Time: 37mins
Max Depth: 13.5m

Log 2:
Time: 9mins
Max Depth: 80.1m!!!? with and up arrow just above and to the right of it.?

Just wondering if anybody else has had this with there gauges or know what might caused it. Hasn't caused a problem i just thought it was random and worth a mention.

Thanks

I own several of the Uwatec Timers. The Log 2 data is from the initial factory test. All of my timers had an initial profile similar to the one you describe.